Year	Number
2008-01-01	1.0776
2009-01-01	4.8669
2010-01-01	8.2559
2011-01-01	12.8565
2012-01-01	17.2277
2013-01-01	18.2154
2014-01-01	18.3072
2015-01-01	20.7128
2016-01-01	16.8106